<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>购物车</title>
    <%--静态包含 base标签 css样式 jQuery文件--%>
    <%@include file="/pages/common/head.jsp" %>
    <script type="text/javascript">
        $(function () {
            //给删除操作绑定点击事件
            $(".delete_item").click(function () {
                //return confirm("你确定要删除【" + $(this).parent().parent().find("td:first").text() +"】吗?")
                return confirm("您确定要把【" + $(this).parent().parent().children("td:first").text() + "】移出购物车吗？");
            })
            //给清空购物车操作绑定单击事件
            $("#deleteCart").click(function () {
                return confirm("您确定要清空购物车？");
            })
            //给修改商品项数量绑定change事件
            $(".updateCount").change(function () {
                //获取商品名称和编号
                var name = $(this).parent().parent().children(":eq(0)").text();
                var id = $(this).attr("bookId")
                //获取当前商品数量
                var count = $(this).val();
                if (confirm("您确定要把【" + name + "】的数量修改为" + count)) {
                    // 发起请求。给服务器保存修改
                    location.href =
                        "http://localhost:8080/Book/cartServlet?action=updateCount&count=" + count + "&id=" + id;
                } else {
                    // defaultValue 属性是表单项 Dom 对象的属性。它表示默认的 value 属性值
                    this.value = this.defaultValue;
                }
            })
        })
    </script>
</head>
<body>

<div id="header">
    <img class="logo_img" alt="" src="static/img/logo.gif">
    <span class="wel_word">购物车</span>
    <%--静态包含，登陆成功后的菜单--%>
    <%@include file="/pages/common/login_success_menu.jsp" %>
</div>

<div id="main">

    <table>
        <tr>
            <td>商品名称</td>
            <td>数量</td>
            <td>单价</td>
            <td>金额</td>
            <td>操作</td>
        </tr>
        <c:if test="${empty sessionScope.cart.items}">
            <%--购物车为空的情况--%>
            <tr>
                <td colspan="5">
                    <a href="index.jsp" style="color: darkorange">
                        亲！您的购物车为空，快去挑选心爱的商品吧！
                    </a>
                </td>
            </tr>
        </c:if>
        <c:if test="${not empty sessionScope.cart.items}">
            <%--购物车非空的情况--%>
            <c:forEach items="${sessionScope.cart.items}" var="entry">
                <tr>
                    <td>${entry.value.name}</td>
                    <td>
                        <input bookId="${entry.value.id}"
                               class="updateCount"
                               style="width: 80px"
                               type="text"
                               value="${entry.value.count}"/>
                    </td>
                    <td>${entry.value.price}</td>
                    <td>${entry.value.totalPrice}</td>
                    <td><a class="delete_item" href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
                </tr>
            </c:forEach>
        </c:if>

    </table>

    <c:if test="${not empty sessionScope.cart.items}">
        <div class="cart_info">
        <span class="cart_span">购物车中共有<span class="b_count">
                ${sessionScope.cart.totalCount}<%--默认调用的是Cart类中的getTotalCount方法--%>
        </span>件商品</span>
            <span class="cart_span">总金额<span class="b_price">
                    ${sessionScope.cart.totalPrice}<%--默认调用的是Cart类中的getTotalPrice方法--%>
            </span>元</span>
            <span id="deleteCart" class="cart_span"><a href="cartServlet?action=clear">清空购物车</a></span>
            <span class="cart_span">
                <a href="orderServlet?action=createOrder">
                    去结账
                </a></span>
        </div>
    </c:if>

</div>

<%--静态包含 页脚内容--%>
<%@include file="/pages/common/footer.jsp" %>
</body>
</html>